Multigraph machine



Mmh 1o, 1931. H HARRIS 1,796,021

MULTIGRAPH MACHINE Filed Dc. 6, 1929 2 sheets-sheet 1 By l- March 10, 1931. H. HARRIS MULTIGRAPH MACHINE Filed Dec. 6. 1929 2 Sheets-Sheet 2 l orney Patented Mar. 10, 1931 iJNITED STATES PATENT GFFICE HARRY HARRIs,`oF MIAMI, FLORIDA, Assrcrnon F crHREF-FIF'LIIS` 'ro FRFMAYNE FORBES, oF MIAMI, FLORIDA MULTIGRAPI-I MACHINE Application led December-6, 1929. Serial No. 412,122.

Y This invention relates broadly to printing machines, and hasmore particular reference to certain new and novel and useful improvements in multigraphing machines.

:a A primary vobject of this invention is ,ing

therefore to provide a machine of the character above referred to and improved type or embossed printing plate capable of use either. on the conventional drum of a multigraphV machine,vor whichY may be used on a particular drum designed especially for use with said plates, whereby the plates may be used yin the same manner as used when afliXed to the conventional drum of a multigraph machine.

A still` further object of the invention is to provide a machineof the character above kmentioned, which will eliminate in multigraph machines the useof numerous individual type as has heretofore been used with such machines, and whereby the disadvantages of other types of machines, such as and principally the D-t dupligraph machine due to the factjthat. the maximum size of the paper which could be used in printing with such types-of machines was ordinary letter size, these types of machines, and especially the D-t dupligraphing machine being unable toV accommodate foolscap.

As is wellknown in the art, the dupligraph-printing machine uses ablock printing plate which is embossedon a graphotype, and it is a primary objectof. this invention to circumvent. the disadvantageof printing with plates on a dupligraph.

Other objects and advantages of the invention will become apparent during a study ofthe fllowingdescription taken in connection with the accompanying drawings, wherein: y

Figure 1 is an elevational view of the invention, the same lbeing shown appliedto the conventional segmental multigraphing drum now in use. l

Figure 2 is a transverser sectional view taken therethrough. y

Figure. 3 isa perspective View of a printplate as comprehended by the present invention.

Figure 4 is a transverse sectional view through the plate.

Figure 5 is a top plan view of ay bracket member to be hereinafter referred to more in detail.

With reference more in detail to the drawings, it will be seen that for the purpose of exemplification, I have shown my invention used with a conventional segmental type ofr multigraph drum now in use, and designated in the drawings generally by thereference character 5.

.Vhile I' have shownvthe invention, and will hereinafter describe the same in conjunction with a drum of this character, it is to be understood that I do not limit myself to this precise type of drum, but on the other hand, intend that the invention is capable of use with a drum especially constructed and adapted therefor.

The present invention comprehends the provision of what may be termed generally as blankets as herein designated generally by the reference character 6. This blanket 6 is formed of a suitable metal'plate curved longitudinally as to be somewhat semi-cylindrical in cross section, and is adapted to be disposed over the drum resting on the T- headed ribs or rails 7 of the drum as shown to advantage inrFigure 2.

At its opposite transverse end the metal blanket 6 is bent inwardly, then upwardly to provide internal channels 8 for reception of the heads of one of the `T-shaped ribs or rails 7 at 'diametrically opposite sides of the drum, as also shown to advantage in Figure 2. Thus, as is apparent, the blanket 6 will be retained on the drum.

From a study of Figure l, it will be seen that the blanket 6 is of a width less than the width of the drum 5 and the purpose of this will be hereinafter more fully set forth.

The invention further comprehends the provision of what may be termed printing plates, which printing-plates are designated generally by the reference character 9. These printing 'plates 9 arepreferably formed of zinc and are of elongated rectangular configuration, said' plates 9 being of a length greater than the width ofthe blanket 6 and ot suitable Width as to enable a plurality of suchr plates to be arranged over the blanket and secured to the drum in 'Y edge to edge relation in amanner to be herei5V` a Y, y l

y embodying certain sentencesor paragraphs l matter Will consist. I

inafter inorejfully set forth. v At their opposite ends,`and1as shown to advantage in Fig. 3these plates 9, adjacent their opposite ends, are offset laterally to provide shouldersv '10;10 and offset-'ends ll-ll.

Each of the platesv9 aresuitably embossed' to orm the raised letters -12thereon,and of Y course, these raised letters 12, When the plate is so embossed, make up or constitute-a suitable legend, the legend ,on eachl of the plates of which the iinished letter; o r printed It is to befurther 4noted that in their Viinished form, these lplates 9 vare curved transversely as shovvn to advantage in Fig. 1l. so as toconform With theperiphery of the'blanket f i In factual Y. practice, the blankets havingV been placedon thedruni 5 as herein'before' mentioned andrset forth indetail,y the'plates are placed on the blanket in edge to Vedge relation, with their lateral ends ll-ll restfor retaining the plate 'in position upon the opposite sides" of the blanket and marginal vretainingbands 13 are then disposed over the drum and over the lateral end l1 of the plate 9 as shown to advantage in kFigure l blanket and drum. i

: Thesemarginal bands 13 are of thesame type ofband as is used Ywith multigraph machines, as is `Well knovvn.Y Of course, the

blanket 6 is disposed between ythe shoulders 1070i the plates 9 and form a raised surface for theplate with respecttothe surface of the drum, so that the lateralfends 1l oi the plates 9'Will rest on the ribs or railsot the drum and the main body portion of the plates 9 will rest on the blanket '6. vln this connection, it Will be then noted that the body or intermediate portion of the plates 9 vvill'be disposed on a plane aboverthey plane .y of the late-ral end 1l of the plate so that the marginal bands 13 Will' be lower Vthan the mainlor .intermediatel portion Yof the plate and consequently" an outline of' these marginal bands will :not shovr upin printing, and the shoulders 100i ythe plates, not only permit of fthe plates havingtheir ends ll resting flat on they drum, but also so that When themarginal bands are placed thereon',l

' the said bandsvvvillbe lovvfenough that as 'Y before intimated, they will Vnot shovv up in printing. Y, Y

Of course,',it is understood that the plates 9 must 'bermade oi comparatively thin material, and therefore the. plates with the einbossing onf' them Will ,notV ofV themselves be 'ofsufiicient height'asito become type-high so ing on .theribs for rails y7 oi the, drum at` that they `Will present a printing'surface. To this end the blankets upon Which the type rest support or raise the plates substantially type-high thus affording a suticient*printingsurface.v i ,y y ,Y

VFrom the foregoing then Vitvvill be seen thatby the use of this 'blanket 6 and the 'embossed plate 9, with a multigraph machine, in a, mannerherein pointed out, the i needgof individual types tor the multigraph machine is eliminated, thus greatly reducingV the wamount of Work as Would be involved in setting the type When the multigraphv4 machine Y- isto Abe used, consequently resulting in a saving ofgreat time and 1n an increased output.

Janother very importantadvantage of thisL invention vas Will ybe appreciated, vis the fact that an? invention 'ot this character Will eliminate the expense of keeping a greatY quantity oi type on'hand as is necessaryfiorf Voperating, suoli types of' printing machines as mu-ltigi'aph'v machines. Y-

'ltvvill he also appreciated, that my inven tion is capable of use With a multigraphmachine Without necessitating any material Vchange in the basic structure ot the machine norin the operation of the machine, other than the Velimination of thek need of type i'orthe machine. i

The plates 9avhen shaped Yand formed as shown and described, andgafterfbeing einbossed through the inedium of'a'conventionalembossing machine orgraphotype may be' Setting vthe niultigraph machine.

- readilyand easily assembledv on the drum ot' clearunderstanding of the operation, v"construction, utility and advantages of an invention of this character Will' be had Without amore detailed description thereof.

' 'Even though I have herein shown and described thef preferred embodiment of my yinvention, it is to beiunderstood'thatthe same is vsusceptible to certain changesi'ull'y comprehende'd` by the yspirit ofthe" invention as Y herein described, and'thelscopeof the ap 1fnde`d`claims1` l Y Havingthus describedmyinvention,*What i lclaim asnew is:V n *Y Y, lj In a printing machine oi the/*class de-A scribed and' in combination, acdru'm having raised ribs or rails integral therewithfa blanket member coniprisinga metallic plate adapted for dispositionV on said drum and provided `with means eooperable With'said ribs vfor detachably ,securing said blanket member Vto said drum, a plurality of em# bossed plates adapted to be-arrangedin edge to edge 'relation on said nblanket inember and extending transversely thereof, the Y Y eiildsof said plates being offset .and adapted for 'rest on thefribs of'saiddrurnfandwref taining means engageable with thedrum is@ Y and the olfset ends of said plates for retaining the latter in position.

2. In a printing machine of the class described, and in combination, a drum having a plurality of spaced transverse ribs or rails integral therewith, a blanket member comprising a plate adapted for disposition on said drum, said plate provided with internal channels for receiving certain of said ribs or rails, a plurality of embossed plates adapted to be arranged on said drums transversely of the latter, said plates having intermediate portions for accommodating said yblanket member, and the ends of said plates being offset .relative to said intermediate portions for rest on the ribs or rails of said drum, re-

taining means engageable with said drum and oiiset ends of said plates for retaining the latter in position, said blanket forming member being of a Width less than the length of said plates, and the offset 'ends of said plates extending beyond the adjacent edges of said blanket forming member.

3. In 'a printingk machine of the class described, and in combination, a drum, a blanket forming member to provide a smooth periphery for said drum, said blanket forming member and said drum provided with cooperating means to provide a detachable connection between said blanket forming member and said drum, a plate having printed characters thereon adapted for rest on said vblanket forming member transversely of the latter, the ends of said plate being oiset and adapted to rest on said drum, retaining means engageable with said drum and offset ends of saidplateforretaining the latter in position, said plate being of ya length greater than the width of said blanket forming member, and said plate being curved transversely for rest on said blanket forming member conformably with said blanket forming member. Y

In testimony whereof I affix my signature.

HARRY HARRIS. 

